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Does resistance training modulate cardiac autonomic control? A systematic review and meta‑analysis

作者:Pooja Bhati

关键词:Heart rate variability · Exercise · Autonomic control of heart · Strength training

发表时间:2019

发表期刊:Clinical Autonomic Research

证据类型:系统评价/Meta分析

Purpose To systematically evaluate the literature on the efects of resistance training (RT) on cardiac autonomic control in healthy and diseased individuals. Methods Electronic databases Pubmed, PEDro, and Scopus were systematically searched from their inception up to June 2018. Randomized controlled trials, quasi-experimental trials, and cross-over controlled trials investigating the efect of RT (of at least 4 weeks duration) on cardiac autonomic control assessed either by linear or non-linear measures of heart rate variability (HRV), barorefex sensitivity, or post-exercise heart rate recovery were included. Of the studies retrieved, 28 were included in the systematic review. Meta-analysis was performed on 21 studies of the total 28 studies. Results Quality and characteristic assessment revealed fair quality evidence. The majority of literature on healthy humans suggested no change in cardiac autonomic control following RT. Standardized mean diferences (SMD) showed a signifcant efect of RT on root mean square of successive diferences between adjacent inter-beat (R-R) intervals (RMSSD) [SMD 0.96, 95% confdence interval (CI) 0.20–1.73; p=0.01], ratio of low- to high-frequency power of HRV (LF/HF ratio; SMD −0.72, 95% CI −1.03 to −0.42; p<0.00001), standard deviation of the instantaneous beat-to-beat variability (SD1; SMD 1.78, 95% CI 1.07–2.49, p<0.00001), and sample entropy (SMD 1.17, 95% CI 0.36–1.97, p=0.005) in diseased individuals. Conclusion This rigorous systematic analysis revealed that RT has no or minimal efects on cardiac autonomic control of healthy individuals, but RT leads to improvement in cardiac autonomic control of diseased individuals.